@article{TAC_2016_31_a22,
     author = {Kate Ponto and Michael Shulman},
     title = {The linearity of traces in monoidal categories and bicategories},
     journal = {Theory and applications of categories},
     pages = {594--689},
     publisher = {mathdoc},
     volume = {31},
     year = {2016},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TAC_2016_31_a22/}
}